What's On Tonight

By KATHRYN SHATTUCK

Published: December 23, 2007

9 P.M. (CBS) IN GOD'S NAME The brothers Jules Naudet, near left, and Gedeon, flanking Imam Muhammad Sayed Tantawi, grand sheikh of Al-Azhar University, focus on spirituality through interviews with 12 of the world's most influential spiritual and religious leaders in this two-hour documentary. The Naudets, who filmed the Emmy Award-winning documentary ''9/11,'' solicited opinions on terrorism and war, as well as on faith, tolerance, unity and peace, from a variety of sources, including Pope Benedict XVI; the Dalai Lama; Alexy II, the head of the Russian Orthodox Church; Grand Ayatollah Mohammed Hussein Fadlallah, a Shiite leader; Yona Metzger, Ashkenazi chief rabbi of Israel; Joginder Singh Vedanti, the Sikhs' highest authority; and Dr. Rowan Williams, Archbishop of Canterbury and head of the Church of England.

4 P.M. (NBC) WYNONNA: TRIBUTE ON ICE Kimmie Meissner, the reigning United States figure skating champion, performs to music by Wynonna Judd in this event taped on Nov. 20 in Chicago. Ms. Judd's mother, Naomi, and the skaters Brian Boitano and Evan Lysacek provide backup.

7 P.M. (ABC) ELMO'S CHRISTMAS COUNTDOWN There's trouble on ''Sesame Street,'' and that could mean the end of Christmas for even the nicest girls and boys. In this hourlong special, Elmo and Abby Cadabby must find the 10 numbered boxes that make up the Christmas Counter-Downer of Stiller the Elf (voiced by the impish Ben Stiller) so that the countdown to the holiday can continue. It might take a miracle, or at least a little adult intervention. Sheryl Crow, above with Elmo; Jennifer Hudson; Alicia Keys; and Brad Paisley perform. Jamie Foxx, Anne Hathaway, Kevin James and Ty Pennington, megaphone in hand, help out their Muppet friends. Charles Gibson lends his voice to the reindeer news anchor, Charles Blitzen; Steve Schirripa and Tony Sirico of ''The Sopranos'' don striped shirts and unibrows to portray Bert and Ernie.

8 P.M. (ABC) DUEL The remaining contestants place their bets on winning $1.5 million on this finale of the six-episode game show combining trivia challenges with poker-style strategy.

8 P.M. (TV One) ONE ON ONE Denzel Washington talks about his career, his religious beliefs, his philosophy about children and education, and his roles as director and star of his latest film, ''The Great Debaters,'' about a debate team at a small African-American college in Texas that goes word-for-word against Harvard in a championship match.

8 P.M. (History) THE HUNT FOR JOHN WILKES BOOTH For 12 days some 10,000 federal troops, detectives and police officers searched Washington and the surrounding countryside for those responsible for the assassination of Lincoln -- and, it turned out, a conspiracy to decapitate the government at the end of the Civil War. This two-hour special tells the story of what the History Channel is calling the first terrorist plot against the American government.

8 P.M. (National Geographic) DOG GENIUS How smart is that doggy in the window? Here, scientists and dog trainers try to find out.

10 P.M. (BBC America) MY BIG BREASTS AND ME Last week BBC America spent an hour with three women taking drastic measures to enlarge their small breasts. This special gives equal time to three women who have large breasts, and some large issues. KATHRYN SHATTUCK